From What Scares the New Atheists, an op-ed piece by author John Gray in the UK’s Guardian:
It has often been observed that Christianity follows changing moral fashions, all the while believing that it stands apart from the world. The same might be said, with more justice, of the prevalent version of atheism. If an earlier generation of unbelievers shared the racial prejudices of their time and elevated them to the status of scientific truths, evangelical atheists do the same with the liberal values to which western societies subscribe today – while looking with contempt upon “backward” cultures that have not abandoned religion. The racial theories promoted by atheists in the past have been consigned to the memory hole – and today’s most influential atheists would no more endorse racist biology than they would be seen following the guidance of an astrologer. But they have not renounced the conviction that human values must be based in science; now it is liberal values which receive that accolade. There are disputes, sometimes bitter, over how to define and interpret those values, but their supremacy is hardly ever questioned. For 21st century atheist missionaries, being liberal and scientific in outlook are one and the same.
It’s a reassuringly simple equation. In fact there are no reliable connections – whether in logic or history – between atheism, science and liberal values. When organised as a movement and backed by the power of the state, atheist ideologies have been an integral part of despotic regimes that also claimed to be based in science, such as the former Soviet Union. Many rival moralities and political systems – most of them, to date, illiberal – have attempted to assert a basis in science. All have been fraudulent and ephemeral. Yet the attempt continues in atheist movements today, which claim that liberal values can be scientifically validated and are therefore humanly universal.
If the topic interests you, RTWT.